秒表.c

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/**************************************************/
/*前三位显示出秒表,后两位位显示1%秒               */
/*大学生电子设计论坛     http://www.nuedc.net.cn  */
/*作者：杨sir    版权没有 欢迎使用 				  */
/*在线技术支持QQ：68723936						  */
/**************************************************/
#include <reg51.h>
#define uchar unsigned char
#define uint unsigned int
sbit wx=P2^3;
sbit dx=P2^4;
uchar code table[]={0x3f,0x06,0x5b,0x4f,
					0x66,0x6d,0x7d,0x07,
					0x7f,0x6f,0x77,0x7c,
					0x39,0x5e,0x79,0x71};
uchar ms,sec;
void delay(uint x);
void main()
{
	TMOD=0x10;
	EA=1;
	ET1=1;
	TR1=1;
	TH1=(65536-10000)/256;
	TL1=(65536-10000)%256;

	while(1)
	{	
		wx=1;
		P0=0xdf;
		wx=0;
		dx=1;
		P0=table[ms%10];
		delay(1);
		dx=0;
		wx=1;
		P0=0xef;
		wx=0;
		dx=1;
		P0=table[ms/10];
		delay(1);
		wx=1;
		P0=0xfb;
		wx=0;
		dx=1;
		P0=table[(sec%100)%10];
		delay(1);
		dx=0;
		wx=1;
		P0=0xfd;
		wx=0;
		dx=1;
		P0=table[(sec%100)/10];
		dx=0;
		delay(1);
		wx=1;
		P0=0xfe;
		wx=0;
		dx=1;
		P0=table[sec/100];
		dx=0;
		delay(1);
	}
}
void timer1() interrupt 3
{
	TH1=(65536-10000)/256;
	TL1=(65536-10000)%256;
	ms++;
	if(ms==100) 
	{
		ms=0;
		sec++;
	}

}
void delay(uint x) 
{
  uchar k;
  while(x--)
  {
    for(k = 0; k <120; k++);
  }
}